Составить программу табулирования функции

#include "stdafx.h"
#include <iostream>
using namespace std;
 
#define PI 3.1415926
 
double Func(double x)
{
    double t;
    t=pow(x, 0.2)*tan(x*PI/180);
    return t;
}
 
int main()
{
    double x,y;
    cout<<"Enter x : "; cin>>x;
    y=Func(x);
    cout<<y<<endl;
    system("pause");
    return 0;
}

#include <math.h>
#include <iostream>
 
int main()
{
  float x;
  float y;
  float z;
  setlocale(LC_CTYPE,"Russian");
  cout << "Введите число: ";
  cin >> x;
  z == pow (x, 0.2);
  y=z*tg(x);
  cout<<y;
  return 0; 
}

z = pow (x, 0.2);

#include "stdafx.h"

#include "pch.h"

#include <iostream> 
#include <cmath>
using namespace std;
 
int main()
{
    double x, y;
    y=pow(x,0.2)*tg(x);     
    cout<<"y="<<y<<endl;
    
system("pause");
return 0;
}

#include <iostream>
#include <cmath>
using namespace std;
double foo(double x) {
    if (x>1e-3)return tan(x)*exp(log(x)*0.2);
    if (x<-1e-3)return tan(x) /exp(log(-x)*0.2);
    return 0;
}
int main() {
    setlocale(LC_ALL, "rus");
    for (double x = -1; x <= 1; x += 0.2)
        cout << "f(" << x << ")=\t" << foo(x) << endl;
    return 0;
}

#include <iostream>
#include <iomanip>
#include <cmath>
 
using namespace std;
 
typedef double(*funcPointer)(double);
 
double func(double x) {
    return x < 0 ?
        -1 * pow(-x, 0.2) * tan(x) :
        pow(x, 0.2) * tan(x);
}
 
void tabulator(double low, double high, double step, funcPointer f) {
    size_t steps = (size_t)((high - low) / step) + 1;
    double x;
    cout <<
        "+----------+----------------------+\n"
        "|     x    |         f(x)         |\n"
        "+----------+----------------------+\n";
 
    for (size_t i = 0; i < steps; ++i) {
        x = low + step * i;
        cout << "| " << setw(8) << setprecision(6) << x << 
            " | " << setw(20) << setprecision(15) << f(x) << " |" << endl;
    }
    cout <<
        "+----------+----------------------+\n";
}
 
int main() {
    tabulator(-1.0, 1.0, 0.2, func);
    tabulator(-1e-3, 1e-3, 2e-4, func);
    return 0;
}